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Experimental demonstration of quantum contextuality with nonentangled photons

Source: Phys. Rev. A 80, 044101 (2009); doi:10.1103/PhysRevA.80.044101

Published 1 October 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.65.Ta
    Foundations of quantum mechanics; measurement theory
  • 03.65.Ud
    Entanglement and quantum nonlocality
  • 42.50.Dv
    Quantum state engineering and measurements (quantum optics)
  • 42.50.Xa
    Optical tests of quantum theory
  • YEAR: 2009
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PUBLICATION DATA
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B. H. Liu, Y. F. Huang, Y. X. Gong, F. W. Sun, Y. S. Zhang, C. F. Li, and G. C. Guo
Key Laboratory of Quantum Information, CAS, University of Science and Technology of China, Hefei 230026, People's Republic of China
We present an experimental test of quantum contextuality by using two-photon product states. The experimental results show that the noncontextual hidden-variable theories are violated by nonentangled states in spite of the local hidden-variable theories can be violated or not. We find that the Hong-Ou-Mandel-type quantum interference effect causes the quantum contextuality. ©2009 The American Physical Society
History: Received 21 January 2009; published 1 October 2009
Permalink: http://link.aps.org/abstract/PRA/v80/e044101

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